Improvement in the modes of forming the heads of wrench-bars



UNITED STATES PATENT OFFICE.

AURY G. GOES, OF WORGESTEB, MASSACHUSETTS.

IMPROVEMENT IN THE MODES 0F FORMING THE HEADS 0F WRENCH-BARS.

Specification forming part of Letters 'Patent No. 113,743, dated April18, 1871.

To all whom it Imay concern:

Beit known that I, AURY G. GOES, of the city and county of Worcester andState of Massachusetts, have invented certain new and usefulImprovements -in Mode of Forming Wrench-Bar Heads; and l do herebydeclare the following to be a full and exact description of the same,reference being had to the accompanying drawing,which forms a part ofthis specilication, in which Figure l represents a perspective view of awrench-bar head after being subjected to the first process of formation.Fig. 2 represents a side view of the same. Fig. 3 represents a frontview of the same. wrench-bar head as formed preparatory to finishing.Fig. 5 represents a front view of the head as formed preparatory tonishing, and Fig. 6 represents the head when nished. Fig. 7 representsa'vertical central section of the forming-dies, wrench-bar, andpartially-formed wrench-head on line A B, Fig. 8; and Fig. 8 representsa similar view on line G D, Fig. 7.

To enable those skilled in the art to which my invention belongs to makeand use the same, I will proceed to describe it more in detail.

As wrench-bar heads have heretofore been formed, it has been the usualpractice to use a bar of metal of sufiicient width and thickness to makethe head, and to then roll or forge down the bar of the wrench to therequired size, which is a slow and comparatively expensive process, and,besides, by such inode of formation, it is difficult to produce asufficient fullness at the lower corners of the head, and as aconsequence the wrench, when finished, shows scars and aws at thejunction of the head and bar, which detracts very much from theappearance and value of the wrench, the only alternative being to use alarge surplus of metal, which requires to be slabbed of inthe process offinishing the head, and consequently very much increases the waste ofmaterial and cost of manufacture. Then, again, no successful mode hasbeen devised, previous to my present invention, whereby the head couldbe formed from a piece of metal rolled to the size, or near the size, ofthe re- Fig. 4 represents the quiredA wrench-bar, the bar and head beingformed in one piece.

The object of my present invention is to produce a wrench-bar head whichshall have the required fullness at its corners without a surplus ofmetal, and also to form the head from and upon a small bar, so as toobviate the necessity of forging or rolling down said bar 5 and myinvention consists in first upset ting the end of a piece of metal ofthe size, or near the sizeof the required wrench-bar into the peculiarshape, as hereinafter described, to form the head, and afterward forgingor pressing the head into the required shape for finishing. V

My improved mode of forming wrench-bar heads is as follows: y

A piece of metal, rolled to the size, or nearly the size, of therequired wrench-bar A, is arranged in a suitable die, A', and its endupset, by means of properly-applied pressure, toproducethepeculiarly-shaped blank head B. The forming-dies A and D areof such shape that the blank head B will be formed with an upwardinclination or bevel, G, at its lower side, while its upper rear corner,D, will be made with an inward inclination, as indicated in Figs. 2 and3 of the drawing.

After the head B has been upset to the form shown in Figs. l, 2, and 3,itis removed from the forming-die, and is subjected to suitable shapingmechanism, wherebyl the head is elongated and flattened to the propershape for finishing, as shown by Figs. 4 and 5. For this part of theprocess I prefer a machine consisting of a drop and a pair of lateralcheek-prcssers, the drop and cheek-pressers acting upon the headalternately, similarto that heretofore patented by L. and A. G. Goes.'

It will be understood that the face of the drop-die is made tocorrespond in shape to the required form of the upper side of the head,it being provided with a suitable angle to bend down the forward end ofthe head B, and thereby produce the bevel E at the upper side thereof,while the lower side is at the same time bent down at a right angle withthe bar A, as shown at G', Fig. 4.

By the operation of bending down the forward end of the head the metalis forced out.

Ward at thesides a a, as indicatedinFigs. 4 and. 5, thus producing therequired fullness at the corners, the eXtreme end being at the same timeWorked forward in a very perfect and easy manner.

the required size of the finished bar, soas to allowsr suicient metal toinsure a smooth finish upon Jche bar.

Having described my improvements in the mode of forming Wrench-barheads, what I claim therein as new and of my invention, and desire tosecure by Letters Patent, is

Reducing the head B, shown in Fig. l, to the shape shown in Figs. 4 and5, in the manner substantially as described.

AURY G. GOES.

Witnesses: l

Trios. H. DODGE, n A. E. PEIRCE.

